Forming die for honeycomb type air filter element sealing supporting ring

Abstract

The utility model discloses a forming die for a honeycomb type air filter element sealing supporting ring, and belongs to the technical field of air filter production dies. The forming die comprises an upper die and a lower die matched with the upper die, a through hole is formed in the middle of the upper die, a containing groove matched with the through hole is formed in the center of the top face of the lower die, and a forming groove coaxial with the containing groove is formed in the top face of the lower die. A gap formed between the through hole of the upper die and the forming groove of the lower die in a die assembly state forms a forming cavity of the sealing support ring, the through hole of the upper die and the accommodating groove of the lower die form an accommodating cavity for accommodating a filter element, and the forming cavity is communicated with the accommodating cavity. The honeycomb type air filter element sealing support ring is simple in structure, reasonable in design and convenient to use, and can be integrally connected with the honeycomb type air filter element while the sealing support ring is subjected to glue injection molding, so that the production procedures are greatly reduced, and the connection strength between the honeycomb type air filter element and the sealing support ring is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air filter production mould technical field, concretely relates to a forming die of honeycomb type air filter element sealing support ring. BACKGROUND

[0002] Air filter is mainly applied in pneumatic machinery, internal combustion machinery and the field, and the role is to provide clean air for these mechanical equipment, to prevent these mechanical equipment from inhaling the air with impurity particles and increasing the probability of abrasion and damage in the work. The main components of air filter are filter element and casing, wherein the filter element is the main filtering part and bears the filtering work of gas, and the casing is the external structure for providing necessary protection for the filter element. Among them, the honeycomb type filter element is widely used in air filter because of the advantages of high space utilization, compact structure and high filtering efficiency.

[0003] The honeycomb type air filter element has air inlet face and air outlet face on the same axis, and such structural feature can make the honeycomb type air filter element have very low air resistance value, make the system air intake of the engine more smooth, and thus improve the service life of the air filter. At the same time, such structure leads to the sealing structure between the honeycomb type filter element and the casing usually adopting the matching mode of radially outward. At present, the sealing structure of the honeycomb type air filter element on the market is usually to first make the sealing support ring by foaming and forming through injecting glue into the mould, then to press the periphery after aligning the end face of the sealing support ring after being sleeved on the honeycomb type air filter element, so as to make the sealing support ring adhere to the radial face of the honeycomb type air filter element. This method not only has more production procedures, but also is easy to cause poor adhesion of the sealing support face and thus cause poor sealing and even the problem of the sealing support ring falling off to make the air filter invalid.

[0004] Therefore, it is necessary to provide a forming die of honeycomb type air filter element sealing support ring integrating glue injection and adhesion, so as to reduce the production procedures and improve the connection strength between the filter element and the sealing support ring. SUMMARY

[0005] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a forming die of honeycomb type air filter element sealing support ring, which has simple structure, reasonable design and convenient use, can realize integrated connection with the honeycomb type air filter element while the sealing support ring is foamed and formed, greatly reduces the production procedures, and effectively improves the connection strength between the honeycomb type air filter element and the sealing support ring.

[0006] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0007] The application discloses a forming die for a sealing support ring of a honeycomb air filter element, which comprises an upper die and a lower die matched with the upper die; a through hole is formed in the middle part of the upper die; a receiving groove matched with the through hole is arranged on the top surface of the lower die; a forming groove coaxially arranged with the receiving groove is arranged on the top surface of the lower die; a gap formed between the bottom of the through hole of the upper die and the forming groove of the lower die in the closed die state forms a forming cavity of the sealing support ring; the through hole of the upper die and the receiving groove of the lower die form a receiving cavity for placing the filter element, and the forming cavity and the receiving cavity are communicated.

[0008] As a preferred embodiment of the application, the inner wall of the through hole is sequentially provided with a matching surface, a forming surface and a conical frustum limiting surface from top to bottom; the outer side surface of the upper part of the lower die is a conical step surface, and the conical step surface of the lower die corresponds to the conical frustum limiting surface of the upper die; a gap formed between the forming surface and the conical frustum limiting surface of the upper die and the forming groove of the lower die in the closed die state forms a forming cavity of the sealing support ring, the through hole of the upper die and the receiving groove of the lower die form a receiving cavity for placing the filter element, and the forming cavity and the receiving cavity are communicated.

[0009] As a preferred embodiment of the application, a glue overflow prevention ring is arranged between the receiving groove and the forming groove.

[0010] As a preferred embodiment of the application, the outer diameter of the side wall of the glue overflow prevention ring near the forming groove gradually increases from top to bottom, so that the outer side wall of the glue overflow prevention ring is inclined.

[0011] As a preferred embodiment of the application, the matching surface of the receiving groove and the through hole are coaxially arranged with the same diameter.

[0012] As a preferred embodiment of the application, the minimum diameter of the forming surface is greater than the diameter of the matching surface; the minimum diameter of the conical frustum limiting surface is greater than the minimum diameter of the forming groove and smaller than the maximum diameter of the forming groove.

[0013] As a preferred embodiment of the application, the minimum diameter of the conical frustum limiting surface is greater than or equal to the maximum diameter of the forming surface.

[0014] As a preferred embodiment of the application, the conical frustum limiting surface comprises a first limiting horizontal surface connected with the forming surface and a first matching inclined surface connected with the first limiting horizontal surface.

[0015] As a preferred embodiment of the application, the conical step surface comprises a second limiting horizontal surface and a second matching inclined surface connected with the second limiting horizontal surface; the width of the second limiting horizontal surface is smaller than the width of the first limiting horizontal surface, and the taper of the second matching inclined surface is the same as that of the first matching inclined surface.

[0016] As the preferred embodiment of the utility model, the forming surface is an arc surface or a broken line surface.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The forming die of the honeycomb air filter filter core sealing support ring provided by the utility model forms the communicating forming cavity and accommodating cavity after the upper die and the lower die are closed, so that the sealing support ring can be integrally connected with the honeycomb air filter filter core while being injection-molded and foamed, which can greatly enhance the connection strength between the honeycomb air filter filter core and the sealing support ring, effectively guarantee the product quality of the honeycomb air filter filter core, and simultaneously realize injection molding and adhesion of the filter core, compared with the existing sealing support ring connection process, greatly reduce the production process, reduce the production cost and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model discloses a structure schematic diagram of the forming die of the honeycomb air filter filter core sealing support ring.

[0020] Figure 2 The utility model discloses a structure schematic diagram of the upper die.

[0021] Figure 3 The utility model discloses a structure schematic diagram of the lower die.

[0022] Figure 4 The utility model discloses a structure schematic diagram of the lower die.

[0023] Explanation of the attached drawings: 1, upper die;11, through hole;12, matching surface;13, forming surface;14, conical platform limiting surface;2, lower die;21, accommodating groove;22, forming groove;23, conical step surface;24, anti-glue overflow ring;3, forming cavity;4, accommodating cavity;5, filter core;6, sealing support ring. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with the attached drawings and specific embodiment.

[0025] For example, the upper die is provided with a through hole, and the lower die is provided with an accommodating groove and a forming groove. Figure 1As shown, the forming die for producing the honeycomb air filter element 5 sealing support ring 6 and realizing the integral connection of the sealing support ring 6 and the filter element 5, the forming die comprises an upper die 1 and a lower die 2 matched with the upper die 1. Specifically, the middle part of the upper die 1 has a through hole 11, and the top surface center of the lower die 2 is provided with a matching groove 21 matched with the through hole 11, and the matching groove 21 is coaxially arranged with the through hole 11. The top surface of the lower die 2 is provided with a forming groove 22 coaxially arranged with the matching groove 21, and the forming groove 22 is annular and located outside the matching groove 21. In the state of the upper die 1 and the lower die 2 being closed, the gap formed between the bottom of the through hole 11 of the upper die 1 and the forming groove 22 of the lower die 2 constitutes a forming cavity 3 of the sealing support ring 6, and the through hole 11 of the upper die 1 and the matching groove 21 of the lower die 2 form a matching cavity 4 for placing the filter element 5, and the forming cavity 3 and the matching cavity 4 are communicated, so that the sealing support ring 6 can be injection molded and foamed in the forming cavity 3 at the same time, realizing the integral connection of the sealing support ring 6 and the honeycomb air filter element 5, which can greatly enhance the connection strength between the honeycomb air filter element 5 and the sealing support ring 6, effectively guarantee the product quality of the honeycomb air filter element 5, and realize injection molding and adhesion of the filter element 5 at the same time, compared with the existing sealing support ring 6 connection process, greatly reducing the production process, reducing the production cost and improving the production efficiency.

[0026] More specifically, as shown in the drawings, Figure 2 The inner wall of the through hole 11 of the upper die 1 is sequentially provided with a continuous matching surface 12, a forming surface 13 and a conical frustum limiting surface 14 from top to bottom. Among them, the matching surface 12 is used to match the outer side of the filter element 5, and the inner diameter of the matching surface 12 is equal to or slightly smaller than the outer diameter of the filter element 5, so that the matching surface 12 can be completely matched with the filter element 5. The matching surface 12 and the matching groove 21 are coaxially and diametrically arranged, so that the projection of the matching surface 12 of the through hole 11 and the matching groove 21 in the vertical direction overlaps. The forming surface 13 is used to constitute part of the structure of the sealing support ring 6, and the structure of the forming surface 13 is determined according to the required structure of the sealing support ring 6; preferably, the forming surface 13 is an arc surface or a polyline surface. The conical frustum limiting surface 14 is used to match and limit the lower die 2 in axial and radial directions. The diameters of the matching surface 12, the forming surface 13 and the conical frustum limiting surface 14 increase in turn, wherein the minimum diameter of the forming surface 13 is greater than the diameter of the matching surface 12, and the minimum diameter of the conical frustum limiting surface 14 is greater than or equal to the maximum diameter of the forming surface 13. As Figure 3As shown, the lower mold 2 is matched with the upper mold 1, and thus the outer side surface of the upper portion of the lower mold 2 is provided with a conical stepped surface 23, so that the conical stepped surface 23 of the lower mold 2 corresponds to the conical stepped limiting surface 14 of the upper mold 1, and the conical stepped surface 23 is located outside the forming groove 22. Specifically, the conical stepped limiting surface 14 comprises a first limiting horizontal surface connected with the forming surface 13 and a first matching inclined surface connected with the first limiting horizontal surface. Correspondingly, the conical stepped surface 23 comprises a second limiting horizontal surface and a second matching inclined surface connected with the second limiting horizontal surface. The width of the second limiting horizontal surface is smaller than that of the first limiting horizontal surface, the minimum diameter of the conical stepped limiting surface 14 is greater than the minimum diameter of the forming groove 22 and smaller than the maximum diameter of the forming groove 22, so that the forming groove 22, the partial first limiting horizontal surface and the forming surface 13 form the forming cavity 3 of the sealing support ring 6. The taper of the second matching inclined surface is the same as that of the first matching inclined surface, so that the bottom of the lower mold 2 is completely matched with the upper portion of the upper mold 1. As shown in the figure, Figure 4 As shown, in the mold closing state, the gap formed between the forming surface 13 and the partial first limiting horizontal surface in the conical stepped limiting surface 14 of the upper mold 1 and the forming groove 22 of the lower mold 2 constitutes the forming cavity 3 of the sealing support ring 6, the through hole 11 of the upper mold 1 and the accommodating groove 21 of the lower mold 2 form the accommodating cavity 4 for placing the filter core 5, the forming cavity 3 and the accommodating cavity 4 are communicated, so that the glue in the forming cavity 3 contacts and adheres to the outer side of the filter core 5 during glue injection molding, the sealing support ring 6 is formed in the forming cavity 3, and the filter core 5 is installed in the accommodating groove 21, so that the sealing support ring 6 is connected with the filter core 5 while being solidified and formed. In some embodiments, in order to prevent the glue from overflowing along the gap between the lower mold 2 and the filter core 5 before glue injection molding, a glue overflow prevention ring 24 is arranged between the accommodating groove 21 and the forming groove 22, and the inner wall of the glue overflow prevention ring 24, i.e. the side wall of the accommodating groove 21, is the inner wall of the forming groove 22. Preferably, the outer diameter of the side wall of the glue overflow prevention ring 24 gradually increases from top to bottom near the forming groove 22, so that the outer side wall of the glue overflow prevention ring 24 is inclined, facilitating demolding.

[0027] In summary, the forming mold of the utility model has simple structure, reasonable design and convenient use, can realize the integrated connection with the honeycomb air filter core 5 while the sealing support ring 6 is injection molded, greatly reduces the production process, effectively improves the connection strength between the honeycomb air filter core 5 and the sealing support ring 6, is beneficial to improving the production efficiency of the honeycomb air filter core 5 and effectively guarantees the product quality.

[0028] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the range of protection of the utility model. Any non-essential changes and replacements made by those skilled in the art on the basis of the utility model belong to the range of protection required by the utility model.

Claims

1. A molding die for a honeycomb air filter element sealing support ring, characterized in that: The upper die and the lower die are matched; the middle part of the upper die has a through hole, the top surface of the lower die is provided with a containing groove matched with the through hole, and the top surface of the lower die is provided with a forming groove coaxially arranged with the containing groove; the gap between the bottom of the through hole of the upper die and the forming groove of the lower die in the closed die state forms a forming cavity of a sealing support ring, the through hole of the upper die and the containing groove of the lower die form a containing cavity for placing a filter core, and the forming cavity and the containing cavity are communicated.

2. The forming die for a honeycomb air cleaner element seal support ring of claim 1 wherein: The inner wall of the through hole is sequentially provided with a matching surface, a forming surface and a conical frustum limiting surface from top to bottom; the outer side surface of the upper part of the lower die is a conical step surface, and the conical step surface of the lower die corresponds to the conical frustum limiting surface of the upper die; the gap between the forming surface and the conical frustum limiting surface of the upper die and the forming groove of the lower die in the closed die state forms a forming cavity of a sealing support ring, the through hole of the upper die and the containing groove of the lower die form a containing cavity for placing a filter core, and the forming cavity and the containing cavity are communicated.

3. A forming die for a honeycomb air cleaner element seal support ring as set forth in either of claims 1 or 2, characterized by: An anti-glue overflow ring is arranged between the containing groove and the forming groove.

4. The forming die for a seal support ring for a honeycomb air cleaner element of claim 3 wherein: The outer diameter of the side wall of the anti-glue overflow ring near the forming groove gradually increases from top to bottom, so that the outer side wall of the anti-glue overflow ring is inclined.

5. The forming die for a seal support ring for a honeycomb air cleaner element of claim 2 wherein: The matching surface of the containing groove and the through hole are coaxially arranged with the same diameter.

6. The forming die for a honeycomb air filter cartridge seal support ring of claim 2 wherein: The minimum diameter of the forming surface is greater than the diameter of the matching surface; the minimum diameter of the conical frustum limiting surface is greater than the minimum diameter of the forming groove and less than the maximum diameter of the forming groove.

7. The forming die for a honeycomb air filter cartridge seal support ring of claim 2 wherein: The minimum diameter of the conical frustum limiting surface is greater than or equal to the maximum diameter of the forming surface.

8. The forming die for a seal support ring for a cellular air filter cartridge of claim 2 wherein: The conical frustum limiting surface comprises a first limiting horizontal surface connected with the forming surface and a first matching inclined surface connected with the first limiting horizontal surface.

9. The forming die for a cell-type air filter cartridge seal support ring of claim 8 wherein: The conical step surface comprises a second limiting horizontal surface and a second matching inclined surface connected with the second limiting horizontal surface; the width of the second limiting horizontal surface is less than the width of the first limiting horizontal surface, and the taper of the second matching inclined surface is the same as that of the first matching inclined surface.

10. The forming die for a seal support ring for a cellulose filter cartridge as defined in claim 2 wherein: The forming surface is an arc surface or a broken line surface.

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